Warning: require(/var/www/projektron.de/httpdocs/vendor/composer/../typo3/cms-core/Resources/PHP/GlobalDebugFunctions.php): Failed to open stream: No such file or directory in /var/www/projektron.de/httpdocs/vendor/composer/autoload_real.php on line 41

Fatal error: Uncaught Error: Class "TYPO3\CMS\Core\Core\SystemEnvironmentBuilder" not found in /var/www/projektron.de/httpdocs/public/index.php:19 Stack trace: #0 /var/www/projektron.de/httpdocs/public/index.php(21): {closure}() #1 {main} thrown in /var/www/projektron.de/httpdocs/public/index.php on line 19